Carbon stocks

It is the energy derived from sources that do not use exhaustible fuels (for example, water – hydroelectric power, wind – wind energy, Sun – solar energy, tides, and geothermal sources). Some combustible materials, such as biomass, can also be considered renewable....

See greenhouse gases (GHG).

A protocol is always linked to an existing convention but is a separate and additional agreement that must be signed and ratified by the "signatory" parties to the convention. Protocols strengthen a convention, usually by adding new and more detailed commitments.